Active clinical trials for "Osteoarthritis, Knee"

Developed a robot for minimally invasive TKA surgery and prepare for the subsequent CFDA application of the minimally invasive total knee replacement robot system.

In this study, investigators analyzed whether the isokinetic knee muscle strength of patients undergoing unilateral total knee arthroplasty (TKA) is a predictor for surgery. Patients and Methods: In total, 29 unilateral TKA candidates (58 knees; mean age = 66.69 ± 7.42 years; mean symptom duration = 10 ± 5.40 years) were enrolled. The knees of patients with bilateral advanced knee osteoarthritis (stage 3 or 4), according to the Kellgren-Lawrence (K-L scale), that were scheduled for unilateral TKA were divided into surgical and non-surgical groups. An isokinetic testing system was used to assess knee flexor and extensor muscle strength (peak torque) at angular velocities of 60°/s and 180°/s (five cycles per velocity). The radiological (X-ray-based K-L scale and magnetic resonance imaging (MRI)-based quadriceps angle) and clinical findings (isokinetic test and visual analog scale pain scores) in both groups were compared. The isokinetic test results correlated with the radiological findings of the surgery group.

The purpose of this study is to determine whether Extracorporeal Focused Shock Wave Therapy reduces knee pain and enhance function in patients with primary knee osteoarthritis.

Chronic painful knee OA is a major cause of disability in older adults. In patients whose symptoms are refractory to conservative management but who do not wish to undergo TKA or, alternatively, are not operative candidates, genicular nerve RFA represents a promising treatment option. Investigators will determine if patients with chronic painful knee osteoarthritis experience meaningful and long-term improvement in pain, function, and analgesic use, as well as prevention of TKA after RFA of the genicular nerves. Investigators will also determine whether zero versus one set of diagnostic genicular nerve blocks Answering these questions will help determine if genicular nerve RFA is indeed a worthwhile treatment for chronic painful knee OA. Additionally, this will help determine the optimal diagnostic protocol for patient selection for this procedure, which has implications for improving treatment success rates, preventing unnecessary procedures, and decreasing healthcare cost savings.

The benefit of preoperative rehabilitation treatment combining physiotherapy and targeted education for patient undergoing Total Knee replacement (TKR) is now well known. Thus, there is lack of validated booklet containing evidence based informations. Our aim is to assess the impact of an evidence based education pre-operative booklet on patient's knowledge and beliefs. The secondary objectives are to assess the impact of the booklet on patient's satisfaction on the information received, the length of stay in orthopedic surgery and the transfer rate to rehabilitation wards. To show a difference of 2 points on the knowledge score (range 0-10) between the two groups, with a = 0.05 and a power of 90%, we considered that 44 patients are needed. The evaluations will take place at baseline, the day before surgery and 6 weeks post-surgery on knowledge and beliefs scores at each visit and on a satisfaction score on the last one. Quantitative data will be compared between groups by the Kruskal-Wallis and qualitative parameters via Fisher exact test. The study protocol was approved by the local Ethic Committee.

A prospective study will be performed to compare the clinical outcome after total knee arthroplasty (TKA) using two different alignment systems: an extramedullary system versus an intramedullary system. The extramedullary femoral alignment system is newly designed. These two systems are used to make the distal femoral resection in 100 patients in a random order.

The purpose of this study is to evaluate and compare implant kinematics of conventional mechanically aligned and anatomically aligned total knee arthroplasties (TKA) at 1 year post-operatively.

Study will define the bioavailability and short term pharmacokinetics of the principal secondary metabolites of a aqueous-ethanolic extract of H. procumbens in non-enteric and enteric capsules.

In this study people with knee arthritis so severe that a joint replacement is needed are recruited for a one day study. Study participants will have an intravenous catheter (IV) inserted in the forearm. A single intramuscular (IM) injection of oxytocin (Pitocin®), 17 micrograms will be administered and blood samples will be taken several times over the next 120 minutes. The amount of oxytocin will be measured in the blood samples. The main purpose of this study is to sample the blood, before and after the administration of oxytocin and calculate the pharmacokinetics (amount of oxytocin in the blood over time) of oxytocin.

The main purpose of this study is to sample the blood and calculate the pharmacokinetics (PK) of oxytocin. This is an unblinded, sequential study of subjects, all of whom will receive an intravenous (IV) infusion of oxytocin (naturally occurring hormone that is made in the brain) with blood samples taken thereafter in order to create a formula to describe the concentrations of oxytocin in the blood over time (pharmacokinetics). In this study healthy volunteers and people with knee arthritis so severe that they may need joint replacement are recruited for a one day study. Each study participant will have 2 IV catheters placed (one in each arm). After placement of the IV catheters and infusion of oxytocin will be given over a 10 minute period. Blood samples will be taken before the infusion begins and several times during and after the infusion. The blood will be drawn through the second IV catheter. The investigators will also do some tests to get a rough idea of how oxytocin changes perceptions on the skin and how this relates to the amount of oxytocin in the blood at the same time. Two kinds of perceptions will be studied. First, the investigators will study a painful perception by placing a probe on the skin and heating it to 113 degrees Fahrenheit for 5 minutes. Each study participant will score any pain that is experienced on a 0 to 10 scale, and most people find that pain rises during the 5 minutes, but remains mild, usually around only 1 or 2 on the 0 to 10 scale. Secondly, the investigators will study the perception of vibration, like one feels with a tuning fork on the skin. For this the investigators will put a controlled vibration device on the arm and start the vibration at such a high frequency (1000 times per second) that it cannot be felt as vibrating. The investigators will slow the frequency until the study participant first feels vibration, then turn off the machine and record this threshold frequency where it is first felt.